^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * acpi_utils.c - ACPI Utility Functions ($Revision: 10 $)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/hardirq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/acpi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/dynamic_debug.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include "internal.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include "sleep.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #define _COMPONENT ACPI_BUS_COMPONENT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) ACPI_MODULE_NAME("utils");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) /* --------------------------------------------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) Object Evaluation Helpers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) -------------------------------------------------------------------------- */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) acpi_util_eval_error(acpi_handle h, acpi_string p, acpi_status s)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #ifdef ACPI_DEBUG_OUTPUT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) char prefix[80] = {'\0'};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) struct acpi_buffer buffer = {sizeof(prefix), prefix};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) acpi_get_name(h, ACPI_FULL_PATHNAME, &buffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Evaluate [%s.%s]: %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) (char *) prefix, p, acpi_format_exception(s)));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) acpi_status
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) acpi_extract_package(union acpi_object *package,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) struct acpi_buffer *format, struct acpi_buffer *buffer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) u32 size_required = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) u32 tail_offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) char *format_string = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) u32 format_count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) u32 i = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) u8 *head = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) u8 *tail = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) if (!package || (package->type != ACPI_TYPE_PACKAGE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) || (package->package.count < 1)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) printk(KERN_WARNING PREFIX "Invalid package argument\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) return AE_BAD_PARAMETER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) if (!format || !format->pointer || (format->length < 1)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) printk(KERN_WARNING PREFIX "Invalid format argument\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) return AE_BAD_PARAMETER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) if (!buffer) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) printk(KERN_WARNING PREFIX "Invalid buffer argument\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) return AE_BAD_PARAMETER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) format_count = (format->length / sizeof(char)) - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) if (format_count > package->package.count) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) printk(KERN_WARNING PREFIX "Format specifies more objects [%d]"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) " than exist in package [%d].\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) format_count, package->package.count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) return AE_BAD_DATA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) format_string = format->pointer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) * Calculate size_required.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) for (i = 0; i < format_count; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) union acpi_object *element = &(package->package.elements[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) switch (element->type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) case ACPI_TYPE_INTEGER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) switch (format_string[i]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) case 'N':
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) size_required += sizeof(u64);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) tail_offset += sizeof(u64);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) case 'S':
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) size_required +=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) sizeof(char *) + sizeof(u64) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) sizeof(char);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) tail_offset += sizeof(char *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) printk(KERN_WARNING PREFIX "Invalid package element"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) " [%d]: got number, expecting"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) " [%c]\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) i, format_string[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) return AE_BAD_DATA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) case ACPI_TYPE_STRING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) case ACPI_TYPE_BUFFER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) switch (format_string[i]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) case 'S':
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) size_required +=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) sizeof(char *) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) (element->string.length * sizeof(char)) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) sizeof(char);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) tail_offset += sizeof(char *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) case 'B':
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) size_required +=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) sizeof(u8 *) + element->buffer.length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) tail_offset += sizeof(u8 *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) printk(KERN_WARNING PREFIX "Invalid package element"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) " [%d] got string/buffer,"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) " expecting [%c]\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) i, format_string[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) return AE_BAD_DATA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) case ACPI_TYPE_LOCAL_REFERENCE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) switch (format_string[i]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) case 'R':
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) size_required += sizeof(void *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) tail_offset += sizeof(void *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) printk(KERN_WARNING PREFIX "Invalid package element"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) " [%d] got reference,"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) " expecting [%c]\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) i, format_string[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) return AE_BAD_DATA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) case ACPI_TYPE_PACKAGE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) ACPI_DEBUG_PRINT((ACPI_DB_INFO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) "Found unsupported element at index=%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) i));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) /* TBD: handle nested packages... */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) return AE_SUPPORT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) * Validate output buffer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) if (buffer->length == ACPI_ALLOCATE_BUFFER) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) buffer->pointer = ACPI_ALLOCATE_ZEROED(size_required);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) if (!buffer->pointer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) return AE_NO_MEMORY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) buffer->length = size_required;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) if (buffer->length < size_required) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) buffer->length = size_required;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) return AE_BUFFER_OVERFLOW;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) } else if (buffer->length != size_required ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) !buffer->pointer) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) return AE_BAD_PARAMETER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) head = buffer->pointer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) tail = buffer->pointer + tail_offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) * Extract package data.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) for (i = 0; i < format_count; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) u8 **pointer = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) union acpi_object *element = &(package->package.elements[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) switch (element->type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) case ACPI_TYPE_INTEGER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) switch (format_string[i]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) case 'N':
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) *((u64 *) head) =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) element->integer.value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) head += sizeof(u64);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) case 'S':
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) pointer = (u8 **) head;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) *pointer = tail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) *((u64 *) tail) =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) element->integer.value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) head += sizeof(u64 *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) tail += sizeof(u64);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) /* NULL terminate string */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) *tail = (char)0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) tail += sizeof(char);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) /* Should never get here */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) case ACPI_TYPE_STRING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) case ACPI_TYPE_BUFFER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) switch (format_string[i]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) case 'S':
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) pointer = (u8 **) head;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) *pointer = tail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) memcpy(tail, element->string.pointer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) element->string.length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) head += sizeof(char *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) tail += element->string.length * sizeof(char);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) /* NULL terminate string */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) *tail = (char)0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) tail += sizeof(char);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) case 'B':
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) pointer = (u8 **) head;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) *pointer = tail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) memcpy(tail, element->buffer.pointer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) element->buffer.length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) head += sizeof(u8 *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) tail += element->buffer.length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) /* Should never get here */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) case ACPI_TYPE_LOCAL_REFERENCE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) switch (format_string[i]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) case 'R':
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) *(void **)head =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) (void *)element->reference.handle;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) head += sizeof(void *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) /* Should never get here */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) case ACPI_TYPE_PACKAGE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) /* TBD: handle nested packages... */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) /* Should never get here */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) return AE_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) EXPORT_SYMBOL(acpi_extract_package);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) acpi_status
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) acpi_evaluate_integer(acpi_handle handle,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) acpi_string pathname,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) struct acpi_object_list *arguments, unsigned long long *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) acpi_status status = AE_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) union acpi_object element;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) struct acpi_buffer buffer = { 0, NULL };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) if (!data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) return AE_BAD_PARAMETER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) buffer.length = sizeof(union acpi_object);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) buffer.pointer = &element;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) status = acpi_evaluate_object(handle, pathname, arguments, &buffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) if (ACPI_FAILURE(status)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) acpi_util_eval_error(handle, pathname, status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) return status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) if (element.type != ACPI_TYPE_INTEGER) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) acpi_util_eval_error(handle, pathname, AE_BAD_DATA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) return AE_BAD_DATA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) *data = element.integer.value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Return value [%llu]\n", *data));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) return AE_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) EXPORT_SYMBOL(acpi_evaluate_integer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) acpi_status
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) acpi_evaluate_reference(acpi_handle handle,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) acpi_string pathname,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) struct acpi_object_list *arguments,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) struct acpi_handle_list *list)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) acpi_status status = AE_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) union acpi_object *package = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) union acpi_object *element = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) u32 i = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) if (!list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) return AE_BAD_PARAMETER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) /* Evaluate object. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) status = acpi_evaluate_object(handle, pathname, arguments, &buffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) if (ACPI_FAILURE(status))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) goto end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) package = buffer.pointer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) if ((buffer.length == 0) || !package) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) status = AE_BAD_DATA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) acpi_util_eval_error(handle, pathname, status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) goto end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) if (package->type != ACPI_TYPE_PACKAGE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) status = AE_BAD_DATA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) acpi_util_eval_error(handle, pathname, status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) goto end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) if (!package->package.count) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) status = AE_BAD_DATA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) acpi_util_eval_error(handle, pathname, status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) goto end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) if (package->package.count > ACPI_MAX_HANDLES) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) kfree(package);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) return AE_NO_MEMORY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) list->count = package->package.count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) /* Extract package data. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) for (i = 0; i < list->count; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) element = &(package->package.elements[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) if (element->type != ACPI_TYPE_LOCAL_REFERENCE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) status = AE_BAD_DATA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) acpi_util_eval_error(handle, pathname, status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) if (!element->reference.handle) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) status = AE_NULL_ENTRY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) acpi_util_eval_error(handle, pathname, status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) /* Get the acpi_handle. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) list->handles[i] = element->reference.handle;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found reference [%p]\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) list->handles[i]));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) end:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) if (ACPI_FAILURE(status)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) list->count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) //kfree(list->handles);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) kfree(buffer.pointer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) return status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) EXPORT_SYMBOL(acpi_evaluate_reference);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) acpi_status
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) acpi_get_physical_device_location(acpi_handle handle, struct acpi_pld_info **pld)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) acpi_status status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) union acpi_object *output;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) status = acpi_evaluate_object(handle, "_PLD", NULL, &buffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) if (ACPI_FAILURE(status))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) return status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) output = buffer.pointer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) if (!output || output->type != ACPI_TYPE_PACKAGE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) || !output->package.count
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) || output->package.elements[0].type != ACPI_TYPE_BUFFER
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) || output->package.elements[0].buffer.length < ACPI_PLD_REV1_BUFFER_SIZE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) status = AE_TYPE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) status = acpi_decode_pld_buffer(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) output->package.elements[0].buffer.pointer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) output->package.elements[0].buffer.length,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) pld);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) kfree(buffer.pointer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) return status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) EXPORT_SYMBOL(acpi_get_physical_device_location);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) * acpi_evaluate_ost: Evaluate _OST for hotplug operations
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) * @handle: ACPI device handle
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) * @source_event: source event code
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) * @status_code: status code
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) * @status_buf: optional detailed information (NULL if none)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) * Evaluate _OST for hotplug operations. All ACPI hotplug handlers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) * must call this function when evaluating _OST for hotplug operations.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) * When the platform does not support _OST, this function has no effect.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) acpi_status
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) acpi_evaluate_ost(acpi_handle handle, u32 source_event, u32 status_code,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) struct acpi_buffer *status_buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) union acpi_object params[3] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) {.type = ACPI_TYPE_INTEGER,},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) {.type = ACPI_TYPE_INTEGER,},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) {.type = ACPI_TYPE_BUFFER,}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) struct acpi_object_list arg_list = {3, params};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) params[0].integer.value = source_event;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) params[1].integer.value = status_code;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) if (status_buf != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) params[2].buffer.pointer = status_buf->pointer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) params[2].buffer.length = status_buf->length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) params[2].buffer.pointer = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) params[2].buffer.length = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) return acpi_evaluate_object(handle, "_OST", &arg_list, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) EXPORT_SYMBOL(acpi_evaluate_ost);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) * acpi_handle_path: Return the object path of handle
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) * @handle: ACPI device handle
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) * Caller must free the returned buffer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) static char *acpi_handle_path(acpi_handle handle)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) struct acpi_buffer buffer = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) .length = ACPI_ALLOCATE_BUFFER,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) .pointer = NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) if (in_interrupt() ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer) != AE_OK)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) return buffer.pointer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) * acpi_handle_printk: Print message with ACPI prefix and object path
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) * @level: log level
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) * @handle: ACPI device handle
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) * @fmt: format string
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) * This function is called through acpi_handle_<level> macros and prints
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) * a message with ACPI prefix and object path. This function acquires
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) * the global namespace mutex to obtain an object path. In interrupt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) * context, it shows the object path as <n/a>.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) acpi_handle_printk(const char *level, acpi_handle handle, const char *fmt, ...)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) struct va_format vaf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) va_list args;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) const char *path;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) va_start(args, fmt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) vaf.fmt = fmt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) vaf.va = &args;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) path = acpi_handle_path(handle);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) printk("%sACPI: %s: %pV", level, path ? path : "<n/a>" , &vaf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) va_end(args);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) kfree(path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) EXPORT_SYMBOL(acpi_handle_printk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) #if defined(CONFIG_DYNAMIC_DEBUG)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) * __acpi_handle_debug: pr_debug with ACPI prefix and object path
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) * @descriptor: Dynamic Debug descriptor
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) * @handle: ACPI device handle
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) * @fmt: format string
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) * This function is called through acpi_handle_debug macro and debug
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) * prints a message with ACPI prefix and object path. This function
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) * acquires the global namespace mutex to obtain an object path. In
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) * interrupt context, it shows the object path as <n/a>.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) __acpi_handle_debug(struct _ddebug *descriptor, acpi_handle handle,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) const char *fmt, ...)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) struct va_format vaf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) va_list args;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) const char *path;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) va_start(args, fmt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) vaf.fmt = fmt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) vaf.va = &args;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) path = acpi_handle_path(handle);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) __dynamic_pr_debug(descriptor, "ACPI: %s: %pV", path ? path : "<n/a>", &vaf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) va_end(args);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) kfree(path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) EXPORT_SYMBOL(__acpi_handle_debug);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) * acpi_has_method: Check whether @handle has a method named @name
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) * @handle: ACPI device handle
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) * @name: name of object or method
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) * Check whether @handle has a method named @name.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) bool acpi_has_method(acpi_handle handle, char *name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) acpi_handle tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) return ACPI_SUCCESS(acpi_get_handle(handle, name, &tmp));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) EXPORT_SYMBOL(acpi_has_method);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) acpi_status acpi_execute_simple_method(acpi_handle handle, char *method,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) u64 arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) union acpi_object obj = { .type = ACPI_TYPE_INTEGER };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) struct acpi_object_list arg_list = { .count = 1, .pointer = &obj, };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) obj.integer.value = arg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) return acpi_evaluate_object(handle, method, &arg_list, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) EXPORT_SYMBOL(acpi_execute_simple_method);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) * acpi_evaluate_ej0: Evaluate _EJ0 method for hotplug operations
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) * @handle: ACPI device handle
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) * Evaluate device's _EJ0 method for hotplug operations.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) acpi_status acpi_evaluate_ej0(acpi_handle handle)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) acpi_status status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) status = acpi_execute_simple_method(handle, "_EJ0", 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) if (status == AE_NOT_FOUND)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) acpi_handle_warn(handle, "No _EJ0 support for device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) else if (ACPI_FAILURE(status))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) acpi_handle_warn(handle, "Eject failed (0x%x)\n", status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) return status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) * acpi_evaluate_lck: Evaluate _LCK method to lock/unlock device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) * @handle: ACPI device handle
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) * @lock: lock device if non-zero, otherwise unlock device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) * Evaluate device's _LCK method if present to lock/unlock device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) acpi_status acpi_evaluate_lck(acpi_handle handle, int lock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) acpi_status status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) status = acpi_execute_simple_method(handle, "_LCK", !!lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) if (lock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) acpi_handle_warn(handle,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) "Locking device failed (0x%x)\n", status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) acpi_handle_warn(handle,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) "Unlocking device failed (0x%x)\n", status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) return status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) * acpi_evaluate_reg: Evaluate _REG method to register OpRegion presence
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) * @handle: ACPI device handle
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) * @space_id: ACPI address space id to register OpRegion presence for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) * @function: Parameter to pass to _REG one of ACPI_REG_CONNECT or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) * ACPI_REG_DISCONNECT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) * Evaluate device's _REG method to register OpRegion presence.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) acpi_status acpi_evaluate_reg(acpi_handle handle, u8 space_id, u32 function)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) struct acpi_object_list arg_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) union acpi_object params[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) params[0].type = ACPI_TYPE_INTEGER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) params[0].integer.value = space_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) params[1].type = ACPI_TYPE_INTEGER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) params[1].integer.value = function;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) arg_list.count = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) arg_list.pointer = params;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) return acpi_evaluate_object(handle, "_REG", &arg_list, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) EXPORT_SYMBOL(acpi_evaluate_reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) * acpi_evaluate_dsm - evaluate device's _DSM method
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) * @handle: ACPI device handle
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) * @guid: GUID of requested functions, should be 16 bytes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) * @rev: revision number of requested function
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) * @func: requested function number
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) * @argv4: the function specific parameter
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) * Evaluate device's _DSM method with specified GUID, revision id and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) * function number. Caller needs to free the returned object.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) * Though ACPI defines the fourth parameter for _DSM should be a package,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) * some old BIOSes do expect a buffer or an integer etc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) union acpi_object *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) acpi_evaluate_dsm(acpi_handle handle, const guid_t *guid, u64 rev, u64 func,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) union acpi_object *argv4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) acpi_status ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) struct acpi_buffer buf = {ACPI_ALLOCATE_BUFFER, NULL};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) union acpi_object params[4];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) struct acpi_object_list input = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) .count = 4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) .pointer = params,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) params[0].type = ACPI_TYPE_BUFFER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) params[0].buffer.length = 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) params[0].buffer.pointer = (u8 *)guid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) params[1].type = ACPI_TYPE_INTEGER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) params[1].integer.value = rev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) params[2].type = ACPI_TYPE_INTEGER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) params[2].integer.value = func;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) if (argv4) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) params[3] = *argv4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) params[3].type = ACPI_TYPE_PACKAGE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) params[3].package.count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) params[3].package.elements = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) ret = acpi_evaluate_object(handle, "_DSM", &input, &buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) if (ACPI_SUCCESS(ret))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) return (union acpi_object *)buf.pointer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) if (ret != AE_NOT_FOUND)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) acpi_handle_warn(handle,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) "failed to evaluate _DSM (0x%x)\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) EXPORT_SYMBOL(acpi_evaluate_dsm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) * acpi_check_dsm - check if _DSM method supports requested functions.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) * @handle: ACPI device handle
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) * @guid: GUID of requested functions, should be 16 bytes at least
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) * @rev: revision number of requested functions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) * @funcs: bitmap of requested functions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) * Evaluate device's _DSM method to check whether it supports requested
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) * functions. Currently only support 64 functions at maximum, should be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) * enough for now.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) bool acpi_check_dsm(acpi_handle handle, const guid_t *guid, u64 rev, u64 funcs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) u64 mask = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) union acpi_object *obj;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) if (funcs == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) obj = acpi_evaluate_dsm(handle, guid, rev, 0, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) if (!obj)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) /* For compatibility, old BIOSes may return an integer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) if (obj->type == ACPI_TYPE_INTEGER)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) mask = obj->integer.value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) else if (obj->type == ACPI_TYPE_BUFFER)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) for (i = 0; i < obj->buffer.length && i < 8; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) mask |= (((u64)obj->buffer.pointer[i]) << (i * 8));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) ACPI_FREE(obj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) * Bit 0 indicates whether there's support for any functions other than
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) * function 0 for the specified GUID and revision.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) if ((mask & 0x1) && (mask & funcs) == funcs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) EXPORT_SYMBOL(acpi_check_dsm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) * acpi_dev_hid_uid_match - Match device by supplied HID and UID
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) * @adev: ACPI device to match.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) * @hid2: Hardware ID of the device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) * @uid2: Unique ID of the device, pass NULL to not check _UID.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) * Matches HID and UID in @adev with given @hid2 and @uid2.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) * Returns true if matches.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) bool acpi_dev_hid_uid_match(struct acpi_device *adev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) const char *hid2, const char *uid2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) const char *hid1 = acpi_device_hid(adev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) const char *uid1 = acpi_device_uid(adev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) if (strcmp(hid1, hid2))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) if (!uid2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) return uid1 && !strcmp(uid1, uid2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) EXPORT_SYMBOL(acpi_dev_hid_uid_match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) * acpi_dev_found - Detect presence of a given ACPI device in the namespace.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) * @hid: Hardware ID of the device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) * Return %true if the device was present at the moment of invocation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) * Note that if the device is pluggable, it may since have disappeared.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) * For this function to work, acpi_bus_scan() must have been executed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) * which happens in the subsys_initcall() subsection. Hence, do not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) * call from a subsys_initcall() or earlier (use acpi_get_devices()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) * instead). Calling from module_init() is fine (which is synonymous
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) * with device_initcall()).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) bool acpi_dev_found(const char *hid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) struct acpi_device_bus_id *acpi_device_bus_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) bool found = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) mutex_lock(&acpi_device_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) list_for_each_entry(acpi_device_bus_id, &acpi_bus_id_list, node)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) if (!strcmp(acpi_device_bus_id->bus_id, hid)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) found = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) mutex_unlock(&acpi_device_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) return found;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) EXPORT_SYMBOL(acpi_dev_found);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) struct acpi_dev_match_info {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) struct acpi_device_id hid[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) const char *uid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) s64 hrv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) static int acpi_dev_match_cb(struct device *dev, const void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) struct acpi_device *adev = to_acpi_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) const struct acpi_dev_match_info *match = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) unsigned long long hrv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) acpi_status status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) if (acpi_match_device_ids(adev, match->hid))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) if (match->uid && (!adev->pnp.unique_id ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) strcmp(adev->pnp.unique_id, match->uid)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) if (match->hrv == -1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) status = acpi_evaluate_integer(adev->handle, "_HRV", NULL, &hrv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) if (ACPI_FAILURE(status))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) return hrv == match->hrv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) * acpi_dev_present - Detect that a given ACPI device is present
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) * @hid: Hardware ID of the device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) * @uid: Unique ID of the device, pass NULL to not check _UID
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) * @hrv: Hardware Revision of the device, pass -1 to not check _HRV
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) * Return %true if a matching device was present at the moment of invocation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) * Note that if the device is pluggable, it may since have disappeared.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) * Note that unlike acpi_dev_found() this function checks the status
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) * of the device. So for devices which are present in the dsdt, but
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) * which are disabled (their _STA callback returns 0) this function
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) * will return false.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) * For this function to work, acpi_bus_scan() must have been executed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) * which happens in the subsys_initcall() subsection. Hence, do not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) * call from a subsys_initcall() or earlier (use acpi_get_devices()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) * instead). Calling from module_init() is fine (which is synonymous
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) * with device_initcall()).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) bool acpi_dev_present(const char *hid, const char *uid, s64 hrv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832) struct acpi_dev_match_info match = {};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) struct device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) strlcpy(match.hid[0].id, hid, sizeof(match.hid[0].id));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) match.uid = uid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) match.hrv = hrv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) dev = bus_find_device(&acpi_bus_type, NULL, &match, acpi_dev_match_cb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) put_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) return !!dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) EXPORT_SYMBOL(acpi_dev_present);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) * acpi_dev_get_first_match_dev - Return the first match of ACPI device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) * @hid: Hardware ID of the device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) * @uid: Unique ID of the device, pass NULL to not check _UID
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) * @hrv: Hardware Revision of the device, pass -1 to not check _HRV
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) * Return the first match of ACPI device if a matching device was present
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) * at the moment of invocation, or NULL otherwise.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) * The caller is responsible to call put_device() on the returned device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) * See additional information in acpi_dev_present() as well.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) struct acpi_device *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) acpi_dev_get_first_match_dev(const char *hid, const char *uid, s64 hrv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) struct acpi_dev_match_info match = {};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) struct device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) strlcpy(match.hid[0].id, hid, sizeof(match.hid[0].id));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) match.uid = uid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) match.hrv = hrv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) dev = bus_find_device(&acpi_bus_type, NULL, &match, acpi_dev_match_cb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) return dev ? to_acpi_device(dev) : NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) EXPORT_SYMBOL(acpi_dev_get_first_match_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) * acpi_backlight= handling, this is done here rather then in video_detect.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) * because __setup cannot be used in modules.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) char acpi_video_backlight_string[16];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) EXPORT_SYMBOL(acpi_video_backlight_string);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) static int __init acpi_backlight(char *str)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) strlcpy(acpi_video_backlight_string, str,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) sizeof(acpi_video_backlight_string));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886) __setup("acpi_backlight=", acpi_backlight);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) * acpi_match_platform_list - Check if the system matches with a given list
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) * @plat: pointer to acpi_platform_list table terminated by a NULL entry
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) * Return the matched index if the system is found in the platform list.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893) * Otherwise, return a negative error code.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895) int acpi_match_platform_list(const struct acpi_platform_list *plat)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) struct acpi_table_header hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) int idx = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) if (acpi_disabled)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903) for (; plat->oem_id[0]; plat++, idx++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) if (ACPI_FAILURE(acpi_get_table_header(plat->table, 0, &hdr)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) if (strncmp(plat->oem_id, hdr.oem_id, ACPI_OEM_ID_SIZE))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) if (strncmp(plat->oem_table_id, hdr.oem_table_id, ACPI_OEM_TABLE_ID_SIZE))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) if ((plat->pred == all_versions) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914) (plat->pred == less_than_or_equal && hdr.oem_revision <= plat->oem_revision) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915) (plat->pred == greater_than_or_equal && hdr.oem_revision >= plat->oem_revision) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) (plat->pred == equal && hdr.oem_revision == plat->oem_revision))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917) return idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) EXPORT_SYMBOL(acpi_match_platform_list);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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